Osborne, Adam, author
McGraw-Hill, 1983
Buku Teks
Capron, H.L., author
The Benjamin / Cumming Publishing Company Inc., 1989
Buku Teks
Sloan, M.E. (Martha E.), author
Addison-Wesley, 1980
Buku Teks
Givone, Donald D., author
McGraw-Hill, 1980
Buku Teks
Long, Larry E., author
Prentice-Hall, 1992
Buku Referensi